When the torch is moved from side to side, Fig. 7-7, more material is heated to the ignition temperature so that additional material is oxidized and blown out of the kerf.
"Welding: Principles and Practices", 6e - Edward R. Bohnart

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When the torch is moved from side to side, Fig. 7-7, more material is heated to the ignition temperature so that additional material is oxidized and blown out of the kerf.
"Welding: Principles and Practices", 6e - Edward R. Bohnart

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The eyes must also be protected from the heat coming from the job.
"Welding: Principles and Practices", 6e - Edward R. Bohnart
The history of the iron and steel industry in North America extends back over 300 years, beginning with a successful ironworks in Saugus, Massachusetts, about 20 miles northeast of Boston. It operated from 1646 to 1670.
"Welding: Principles and Practices", 6e - Edward R. Bohnart
If a fire should occur, properly trained personnel should use dry sand, powdered graphite, or commercially available Metal-X* to extinguish the titanium.
*Metal-X is a registered trademark for powder produced by Ansul Manufacture in Marinette, Wisconsin.
"Welding: Principles and Practices", 6e - Edward R. Bohnart
The amount of lag can be expressed as a percentage of the plate thickness, Fig. 7-8.
"Welding: Principles and Practices", 6e - Edward R. Bohnart

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When the torch is held in a vertical position and the cutting conditions are correct, this line is vertical from top to bottom, Fig. 7-18 (1). This condition is referred to as zero drag.
"Welding: Principles and Practices", 6e - Edward R. Bohnart
For cutting plate of 6 inches or heavier, propane, propylene, or Mapp® gas are better choices. Because a deep area must be heated, the dispersed BTU's, the bushy flame, and the high total BTU content of these gases do a good job in heavy plate cutting, Fig. 7-4.
"Welding: Principles and Practices", 6e - Edward R. Bohnart
In the oxyacetylene flame, BTU's are created mainly in the inner cone. With the other gases, BTU's are largely dispersed through the outer flame envelope, Fig. 7-3.
"Welding: Principles and Practices", 6e - Edward R. Bohnart